Bottle cap



W. L. SCHULTZ.

I BOTTLE GAP.

APPLICATION man Maw/16,1922.

1,433,060, Pat ented m 5,1922.

INVENTOR.

A TTORNE Y.

WALTER L. SCHULTZ, OF CHIQAGQ-ILLINOIS. I j

BOTTLE oer.

Application filed May-1G,

To dZZfw/lom it may concern." ,1

Be it known that I, WALTER L. Sonnrrz, a citizen of the United States,- residin at Chicago, in the county of Cook and of Illinois, have invented certain new and useful Improvements in Bottle Caps, of:

which the following is a specification.

This invention has reference to 1mprovements in bottle caps designed particularly for closing milk bottles, although adapted for other like purposes and therefore not confined to milk bottles alone.

Like milk bottles generally, the capsis" made of some cheap material which may be readily manufactured in large quantities and at small expense since such bottle caps are used but once and are then discarded.

In order to prevent the bottle cap from representing too large a proportion of thecost of the closure with relation to the value of the contents of thebottle and at the same time to provlde a bottle cap which shall be particularly elficient in use, the cap mustbe very cheaply made and must very effectively seal the bottle especially where the contents of the bottle consists of milk.

Ordinarily, bottle caps are made of a single thickness of paste board or cardboard, which will not prevent access of ferment germs to the milk contained in the bottle, for more than a very short period of time.

In order to prevent ready access of such ferment germs, the present invention 'contemplates the employment of a plurality of layers of cardboard in face to face relation and cemented in such relation one to the other. I

One of the cardboard disks is of full circular contour to fit snugly into the mouth of the vbottle. The next disk is of only partially circular contour and is considerably smaller in area than the first disk, and the peripheral edge of the second disk coincides with a portion of the peripheral edge of the first disk and then terminates in a tab projecting through a slit in a third disk, which third disk is of full circular contour,-

while the tab is accessible on that face of the disk, through which it extends, remote from the full circular disk.

By the employment of three components of the bottle or jar stopper, access of ferment germs to the interior of the bottle is practically impossible, and milk inclosed in the bottle and protected by a triple-wall stopper or cap is practically proof from conend of a ;milk

separate from the bottle. p

.3 is a section on the line of 1922. 7 Serial No. 561,424.

. lamination and will keep for a farlongerperiod than 155 usually the case withJmilk were bottles protected by a single-lamina stopper.

I so long as such changes and-modifications narir no material departure from the salient lieatures of the invention as expressed in the appended claims, j I

in the drawings Y A Figure l is a perspective view of the upper bottle equipped with the invention. p Fig. 2 a plan view of'the bottle stopper Fig. Fig. 2. I

Fig. 'isa plan view of one of the elements of the stopper. I i Y Fig. 5 is a plan view of a second element ofthe stopper.

Fig. 6 is a plain view of a third element of thestopper, such three elements, shown separately in F 4, 5 and 6, appearing. in the section of Fig. 3. 3

Referring to the drawings, there is shown the upper end of a milk bottle in Fig. 1, such milk bottle being of'ordinary construction and provided with a mouth 2. v

The milk bottle 1, as shown in F ig.. 1, may be of ordinary construction except that. the mouth 2 may be of greater depth than usual because of the increased depth or thickness of the. stopper,- which latter appears complete at 8 in Fig. 3.

The bottle stopper orcap 3 comprises three separate elements 4, 5 and 6, respectively, and shown separately in Figs. 4:, 5 and 6, independent of the others. I

The element a of the stopper is in the form of a full circle and contains near one edge a slit or slot 7' in chord one side of the stopper element 4r.

Y The stopper e1ement5 is of circular contour, having a portion of its periphery defining a full circle and the remainder of its periphery, indicated at 8, of sharper curvature so that the area of the section 5 is less than that of either of the consideration, of the following detailed description :taken 1n connection' with, part but partially relation to sections 4 or 6, both of which define full circles. Extending centrally from the intermediate portions of the section 5' from the approaching side 8 is a tab 9 of width which may correspond to the customary manipulating tabs of milk bottle stoppers. The tab 9 extend'ng through the slot 7 at an angle to the surface of the disk a will naturally trend away from theouter face of the disk 4; and so constantly assume an accessible position so that the tab may be very readily grasped by the hand of the operator and present no difficulty to being lifted from its seat in the mouth of the bottle, although at all times tending to lie quitetlat in the mouth of the bottle, for the tab may be long enough to engage the mouth of the bottle and thus be grasped without difliculty.

To assemble the bottle stopper, the stopper element 5 has the tab 9 passed through the slot 7 withthe two tabs l and 5 united by a layer of glue or cement so that the peripheral portions of the two disks are in incidence.

Having assembled the two disk members at and 5. the third disk member 6 is applied onto the disk member so as to overlie the disk member a, being glued or cemented thereto. The disk member 6 thereupon encloses the disk member 5 and the three disks are firmly united as one member.

By this means. the bottle stopper or cap is made of a triple member with intervening layers of glue or cement and produces a a structure which is amply stifi' or sturdy for the purposes oi": the invention.

@ne objection to bottle caps or stoppers with single manipulating tabs, is the fact that the tabs often break oil, and this objeci ,eespeo tion is in a large measure overcome by this invention.

What is claimed is 1. A cap for milk bottles comprising a plurality of paper disks, of which spaced ones conform in shape and size to the mouth of the bottle, and another one is of less than circular shape and smaller than the mouth of the bottle and provided with a tongue traversing a slot through the outermost one of the disks.

2. A cap or stopper prising a plurality of for milk bottles comliber disks in superposed order, with spaced ones of the disks corresponding in size to the mou h 01%? the bottle and an intermediate disk located between the other disks, and the last named disk having a tab or finger projecting from and "formed in one piece therewith and one of the disks having a thin slot therethrough in chord relation to the perimeter of the disk to pass the tab or finger.

8. A. cap or stopper for milk bottles com prising a plurality of fiber disks united in superposed order, with the outer ones of the disks conforming in size and position to each other and to the size of the mouth oi' the bottle and intermediate one of the disks being oi? less area than the other disks and provided with a tab or tongue pro ecting from a slot through one of the first named disks in chord relation to the edge of the disk, and the several disks being glued or cemented together face to v.tace to register in the bottle mouth.

Tin'testimony whereof, 1

hereto.

WALTER L. SCHULTZ.

aliix my signature 

